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. 2018 Jan 24;8:1564. doi: 10.1038/s41598-018-19925-7

Figure 4.

Figure 4

Slow moving waves recorded using calcium imaging. (a) Local field potential recording from the slice in the calcium imaging experiments. (b) Optical signals of the slow moving wave from 4 different regions of interest in (c) of the hippocampal slice. Solid line: mean value. Dash line: mean +/− SD. (c) An example of imaging region in a longitudinal hippocampal slice and selected regions of interest for further analysis in the fluorescent image. (d) An example of the delay estimated by cross-correlation calculation between two optical signals (red and blue traces). (e) The histogram of estimated delay based on cross-correlation calculation from 122 events of slow moving waves. (f) The histogram of the speed of the slow moving wave detected by calcium imaging.